--- title: Siemon Jacks Crowned King of PoE description: It might be time to pull the plug on inferior connections and choose Siemon’s patented crowned contact—it’s what makes these jacks the King of PoE. image: https://www.accu-tech.com/hubfs/non-siemon-jack.jpg --- {% set baseFontFamily = "Open Sans" %} /* Add the font family you wish to use. You may need to import it above. */ {% set headerFontFamily = "Open Sans" %} /* This affects only headers on the site. Add the font family you wish to use. You may need to import it above. */ {% set textColor = "#565656" %} /* This sets the universal color of dark text on the site */ {% set pageCenter = "1100px" %} /* This sets the width of the website */ {% set headerType = "fixed" %} /* To make this a fixed header, change the value to "fixed" - otherwise, set it to "static" */ {% set lightGreyColor = "#f7f7f7" %} /* This affects all grey background sections */ {% set baseFontWeight = "normal" %} /* More than likely, you will use one of these values (higher = bolder): 300, 400, 700, 900 */ {% set headerFontWeight = "normal" %} /* For Headers; More than likely, you will use one of these values (higher = bolder): 300, 400, 700, 900 */ {% set buttonRadius = '40px' %} /* "0" for square edges, "10px" for rounded edges, "40px" for pill shape; This will change all buttons */ ### After you have updated your stylesheet, make sure you turn this module off [Click to Contact Sales](https://www.accu-tech.com/contact-us) | Call Corporate Office at [888-222-8832](tel:18882228832) [![Accu-Tech logo with tagline in navy blue](https://www.accu-tech.com/hs-fs/hubfs/Accu-Tech%20Blue%20Tagline%20300px%20-%20Edited.png?width=300&height=95&name=Accu-Tech%20Blue%20Tagline%20300px%20-%20Edited.png "Accu-Tech logo with tagline in navy blue")](https://www.accu-tech.com/) # Siemon Jacks Crowned King of PoE by **[Julie Clark](https://www.accu-tech.com/accu-insider/author/julie-clark)** on February 12, 2016 At Accu-Tech, we know how important the life of your products are for your business, and your bottom line. In an effort to improve the electrical and mechanical performance of the traditional RJ-45 jack, Siemon invented and patented a curved or “crowned” contact shape for its MAX® and Z-MAX® RJ-45 jacks. In addition to achieving the industry's highest transmission performance and eliminating the risk of permanent contact deformation due to mechanical stress, Siemon’s patented crowned jack contacts provide **superior support for remote powering applications**. ![KingofPoE-animated-whitebackground.gif](https://www.accu-tech.com/hs-fs/hubfs/KingofPoE-animated-whitebackground.gif?width=331&height=250&name=KingofPoE-animated-whitebackground.gif "KingofPoE-animated-whitebackground.gif")Unmating a jack-plug connection under a PoE load produces an arc that erodes the gold plated jack-plug contact surfaces at the arcing location. When this erosion occurs in the area of the fully mated position, the result is an unreliable connection. Only Siemon’s crowned jack contact geometry places arcing damage to both the plug and jack contacts away from the final mated position—allowing you to connect and disconnect to the latest PoE applications with zero risk. [Learn more about the effects of erosion](http://www.siemon.com/us/ConvergeIT/poe/effects-of-spark-gap-erosion-caused-by-unmating-under-poe-load.asp) with Siemon. As PoE standards advance for higher power delivery over all four pairs of a network cable, it just might be time to pull the plug on inferior connections and choose Siemon’s patented crowned contact—it’s what makes these jacks the **King of PoE. ** **Check out the visual below. ** ### Other Jacks... Damaged Fully Mated Position ![non-siemon-jack.jpg](https://www.accu-tech.com/hs-fs/hubfs/non-siemon-jack.jpg?width=737&height=268&name=non-siemon-jack.jpg "non-siemon-jack.jpg") ### Siemon... Undamaged Fully Mated Position ![siemon-jack.jpg](https://www.accu-tech.com/hs-fs/hubfs/siemon-jack.jpg?width=737&height=261&name=siemon-jack.jpg "siemon-jack.jpg")   **[To learn more about Siemon's patented technology, click here](http://www.siemon.com/us/ConvergeIT/poe/) ** [**or contact your local Accu-Tech representative.**](https://www.accu-tech.com/contact)   - [Tweet](https://twitter.com/share) Topics: [Siemon](https://www.accu-tech.com/accu-insider/topic/siemon) ### Subscribe To Our Blog ### Additional Information ### About Accu-Tech Accu-Tech is a national distributor of Voice, Data, AV, Wireless, and Security solutions. We partner with best-in-class manufacturers to provide the integrated, future-proof solutions our customers require. From project services and management to on-the-job-site logistics, Accu-Tech ensures every customer’s project is supported from design to completion. 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